Thunderstorms pose significant risks to aviation, especially during the mature stage. Hazards include severe turbulence, wind shear, microbursts, hail, lightning, icing, and reduced visibility. Squall lines, which can stretch for hundreds of miles, are especially dangerous due to their continuous severe weather and lack of safe gaps for navigation. Embedded storms, hidden within larger cloud systems, are particularly hazardous for visual flight rules (VFR) pilots. The FAA warns that the worst effects of thunderstorms, such as gust fronts and hail, can extend miles beyond the visible storm, making proximity to these weather systems perilous.